JP2525766Y2 - Dispensing cosmetic container - Google Patents

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD OF THE INVENTION The present invention relates to a dispensing cosmetic container, and more specifically, a dispensing cosmetic container in which the outer diameter of the container is reduced to increase the strength and facilitate assembly during production.
In particular, it relates to a cartridge type cosmetic container.

[0002]

2. Description of the Related Art A dispensing cosmetic container using a groove pipe is already well known, and a container in which this is formed as a cartridge is also known. For example, Japanese Utility Model Publication No. 63-1010
FIG. 5 shows a cartridge type dispensing pencil 1 comprising a core chuck 28 housed in a groove pipe 30 shown in FIG.
2 is shown. The core chuck 28 is engaged with the spiral groove 24 by protruding a projection 29 provided on one side at the rear end thereof from the groove 33 of the groove pipe. If such a fitting method of the projection and the spiral groove only on one side of the shaft is adopted, the spiral cylinder (the main body 3)
Since the driving force to the core chuck projection due to the rotation of 2) is concentrated at one point, the fact that the thread must be relatively deep, that is, the outer diameter of the main body (or the spiral cylinder) must be made large, due to the demand for strength. There is the above disadvantage.

In order to avoid this, screw fitting portions of the core chuck are provided on both sides in an axially symmetric manner, and each is fitted.
It is considered that the internal thread of the thread should be provided on the inner circumference of the spiral cylinder.
Such attempts are already known, for example,
FIGS. 4 to 7 of No. 71121 show a lead chuck 30 having projections 33, 33 projecting axially symmetrically on both sides. In this core chuck, a pair of elastic claws 32 extending forward from the projections 33 engage with a pair of sliding grooves 25 formed in the core cylinder 21 in the axial direction, thereby ensuring stable movement of the cosmetic A. ing. However, since one end of the sliding groove 25 is closed at the rear end by the locking projection 26, as a practical matter, the work of assembling the core chuck 30 to the core cylinder 21 requires:
Somewhat impossible. That is, as shown in FIG. 7, the base 31 of the core chuck 30 has a short axis cylindrical shape, and the diameter of the cylinder is considerably larger than the width of the sliding groove 25. The other sliding groove 2 not closed by the locking projection 26
5 must be forcibly pushed open to expand it beyond the diameter of the base cylindrical shape 31, which is not only troublesome in that the assembling operation requires a certain skill but also has a great risk of damaging the core tube. There is. In order not to force the sliding grooves to expand, it is conceivable to leave the rear ends of both sliding grooves open, but this reduces the strength of the assembly with the spiral cylinder. This is not practical because it causes a disadvantage that each part is easily disassembled during assembly or use.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, the lead chuck is engaged with the helical cylinder at two different points on the circumference, the assembling work is facilitated, and the overall strength is improved. An object of the present invention is to provide a dispensing cosmetic container which can make the outer diameter of the shaft smaller. Specifically, the present invention enables a core chuck having an axially symmetric screw fitting portion to be elastically bent and assembled to the groove pipe without forcibly opening the groove pipe. It is intended to provide a cosmetic container.

[0005]

SUMMARY OF THE INVENTION For this reason, according to the present invention, a pair of longitudinal grooves are preferably formed along the axial direction in the rear half of a tapered cylinder through which an inner diameter portion for accommodating a cosmetic core is freely movable. Provided symmetrically, one vertical groove is opened to the tail, the other vertical groove closes the tail at the closed end, and the core chuck housed in the tapered cylinder inner diameter portion holds the cosmetic core at the front end and has And a narrow extending leg extending from the holding portion to the rear end with a narrow width equal to or less than the longitudinal groove to impart flexibility. A pair of screw protrusions protruding outward from the vertical groove is provided near the end, and a spiral tube formed on the inner periphery with a two-thread female groove engaged with these screw protrusions can be rotated to the rear half of the tapered tube. To realize a dispensing cosmetic container.

The narrow extension leg of the flexible core chuck closes its tail when the front end (holding portion) of the core chuck is inserted from the rear end of the tapered cylinder into the inner diameter part in order to assemble the core chuck into the tapered cylinder. Can be flexed enough to allow the threaded protrusion to be engaged with the longitudinal groove to get over the closed end of the tail. For this reason, according to the present invention, it is not necessary to forcibly push and open any of the vertical grooves, the core chuck can be assembled to the tapered cylinder by simple and quick work, and there is a danger of damage due to the vertical opening of the vertical groove. Can be avoided.

[0007] The narrow extension leg of the core chuck preferably has a threaded portion which is preferably axially symmetric, and a double threaded screw for threading the threaded portion is formed on the inner periphery of the rotary spiral cylinder. From
This has the effect of dispersing the screw fitting strength without concentrating on one point, so that even if the height of the screw thread is designed low, it is possible to obtain sufficient strength without danger of breaking, and as a whole the outer diameter of the container Has the effect that it can be made thin.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a vertical longitudinal sectional view of the dispensing cosmetic container according to the present invention, and FIG. 2 is a sectional view taken along a vertical center line in FIG. 1 and viewed horizontally from below. This feeding container basically consists of a tapered cylinder 1, a flexible core chuck 7 according to the present invention that can slide inside the tapered cylinder 1, and a spiral cylinder 13 that applies a driving force to the core chuck.

The first half of the tapered cylinder 1 has a tapered shape and narrows toward the tip (the left end in the figure).
Has a small outer diameter and extends to the rear end. The inner diameter part 2 penetrates through the front half and the rear half. As can be seen from FIG. 1, longitudinal grooves 3 and 4 are preferably formed axially symmetrically in the rear half portion 1a. The longitudinal groove 3 is open to the rear end, but the vertical groove 4 is closed at the rear end by the closed end 5. ing.

The flexible core chuck 7 according to the present invention is shown in FIG.
As can be clearly seen from the perspective view of FIG. 1, the front end side is formed as a suitably cylindrical holding portion 8 having a diameter capable of being slidably guided inside the inner diameter portion 2 of the tapered cylinder, and an inner hole 8a is formed at the tip. ,
The cosmetic core 12 is held. The narrow extension leg 9 extends rearward from the cylindrical holding portion 8 with a step on both sides, and its width W is, as seen at the right end in FIG.
The width of the vertical grooves 3 and 4 of the tapered cylinder 1 is equal to or smaller than the width. Near the rear end of the narrow extension leg 9, a pair of screwing projections 10 and 11 that can protrude from the vertical grooves 3 and 4 are preferably provided to be axially symmetric, and as shown in FIG. And project from the outer diameter of the tapered cylinder rear half 1a.

A spiral cylinder 1 is provided on the outer periphery of the tapered cylinder rear half 1a.
3 are rotatably fitted. Two internal thread grooves 14 and 15 are engraved on the inner periphery of the spiral tube 13, and the screw projections 10 and 11 are screwed to the grooves, respectively. Reference numeral 16 denotes an O-ring as appropriate. FIGS. 1 and 2 show a state in which the threaded protrusions 10 and 11 are engaged with the rear ends of the two female thread grooves 14 and 15 and the cosmetic core 12 is housed in the tapered cylinder 1. is there.
From this state, the tapered tube 1 is picked up by a finger and the spiral tube 13
When the is turned with the other finger, this rotational force causes a pair of protrusions 10,
Advancing the lead chuck 7 and the cosmetic lead 12 as a linear forward force via the lead 11 is a well-known feeding operation. When the spiral tube 13 is turned in the opposite direction, the cosmetic core 12 is pulled back.

The structure of the double-threaded screws 14 and 15 and the pair of threaded protrusions 10 and 11 according to the present invention is divided without concentrating the screw-fitting strength at one point when the screw is advanced and retracted. The screw thread can be designed to be lower than that of the single-threaded screw, so that there is an advantage that the outer diameter of the spiral cylinder can be made smaller than before. However, as described above, there are difficulties in assembling the core chuck to the tapered cylinder when the double-thread screw and the double screw projection are used, but according to the present invention, the core chuck 7 is substantially By having a large bulky holding portion 8 and a narrow extension leg 9 that is narrower and extends rearward,
This has made it possible to avoid difficulties in assembling and problems of breakage and destruction. This point will be described with reference to FIGS.

FIG. 4 shows an initial stage of assembling the core chuck 7 from the rear end of the rear half 1a of the tapered cylinder 1. About half of the core holding part 8 and the narrow extension leg 9 are inserted into the tapered cylinder inner diameter part 2. Have been. When the lead chuck 7 is pushed forward, one screwing protrusion 11 hits the closed end 5 of the vertical groove 4 and cannot enter any further. Then, as shown in FIG. 5, by slightly raising the buttocks of the narrow extension legs 9 so that the protrusions 11 can get over the closed end 5, the holding portion 8 of the core chuck 7 is suppressed by the peripheral wall of the inner diameter portion 2. Okay, mainly narrow extension legs 9
, Lightly bends at the portion, allowing the protrusion 11 to get over the closed end 5 and to allow the lead chuck 7 as a whole to advance.

Thus, when the protrusion 11 gets over the closed end 5, when the lifting force is released, the protrusion 11 properly fits into the vertical groove 4 and the other protrusion 10 properly fits into the vertical groove 3, as shown in FIG. The fitting and the assembly of the tapered cylinder and the core chuck are completed. Next, the spiral tube 13 is attached to the rear half 1a of the tapered tube 1 and the screwing projections 10 and 11 are respectively fitted to the female screw grooves 14 and
Screw with 15. At this stage, the cosmetic core 12 is
May be inserted and held in the inner hole 8a. As mentioned above,
The flexible core chuck of the present invention has a relatively large length compared to its thickness, and the assembly to the inner diameter portion of the tapered cylinder is completed by only slightly bending in the length direction. Since it is quick and does not require, for example, forcible pushing and opening of the vertical groove 3, there is no danger of component breakage.

The dispensing cosmetic container of the present invention as described above can be implemented as a practical cosmetic cartridge as shown in FIG. That is, the spiral cylinder 13
One end of a holder cylinder 20 of an appropriate length is removably fixed to the outer periphery of, and the spiral cylinder 13 rotates relative to the tapered cylinder 1 by turning the holder cylinder 20. Holder tube 20
At the other end, for example, an eyeliner tip 21 or another cosmetic or cosmetic is attached via a suitable attachment 22, and a cap 23 is covered. As described above, according to the present invention, the outer diameter of the spiral cylinder portion can be reduced while maintaining sufficient strength by using the two-start screw and the double protrusion, so that a thin holder can be used. By combining them, it is possible to realize a slim and sophisticated cosmetic product as a whole. The dispensing cosmetic container of the present invention is not necessarily a cartridge, but may be a disposable single-use cosmetic. In this case, as shown in FIG. It is desirable to form a continuous surface without providing a step between them.

[0016]

As described above, according to the present invention, in the configuration in which the lead chuck is screwed into the double-threaded female thread by the double spiral protrusion, the cosmetic lead holding portion and the narrower and longer rearward extending portion are provided. Since the lead chuck is configured to be flexible with the narrow extension legs, even when one of the two longitudinal grooves is closed at the rear end, the assembling can be performed quickly and easily by simply bending the lead chuck slightly. This can be performed safely, the risk of breakage caused by forcibly expanding the flutes can be eliminated, and the production yield can be improved. In addition, since the screw fitting strength can be divided by the double screwing projection, there is an effect that the height of the screw thread can be reduced, and thus the outer diameter of the container can be reduced to provide a slim impression cosmetic, At the same time, there is an effect that sufficient strength of each fitting part can be realized.

[Brief description of the drawings]

FIG. 1 is a vertical longitudinal sectional view showing a basic embodiment of a dispensing cosmetic container according to the present invention.

FIG. 2 is a cross-sectional view of the cosmetic container of FIG. 1 cut horizontally and viewed from below.

FIG. 3 is a perspective view showing the flexible core chuck according to the present invention.

FIG. 4 is a sectional view showing an initial stage of an operation of assembling the flexible core chuck of the present invention to the tapered cylinder.

FIG. 5 is a sectional view showing a second stage of the assembling operation.

FIG. 6 is a cross-sectional view showing a stage where the flexible core chuck has been assembled to the tapered cylinder.

FIG. 7 is a partial longitudinal sectional view showing one embodiment of a practical cosmetic product using the dispensed cosmetic container of the present invention as a cartridge.

[Description of Signs] 1 ... Tapered shaft 1a ... Last half part 2 ... Inner diameter part 3 ... Vertical groove (rear end open) 4 ... Vertical groove 5 ... Closed end 7 ... Flexible core chuck 8 ... Holding part 9 ... Narrow width extension Legs 10: Screw-in protrusions 11: Screw-in protrusions 12: Cosmetic cores 13: Spiral tubes 14, 15: Female thread grooves

Claims (5)

(57) [Scope of request for utility model registration] 1. A rear groove 1a of a tapered cylinder 1 having an inner diameter part 2 penetrating in the axial direction therein, and a vertical groove 3 extending to a rear end and a vertical groove 4 having a rear end closed by a closed end 5. The core chuck 7 inserted into the inner diameter portion is provided with a holding portion 8 that holds the cosmetic core 12 at the front end and can slide and move in the inner diameter portion, and is equivalent to the vertical groove connected to the holding portion. Or a narrow extension leg 9 extending to the rear end with a width W less than or equal to the width W, and a flexible engagement, and a screwing protruding outward from the longitudinal groove near the rear end of the narrow extension leg 9 respectively. A pair of protrusions 10 and 11 are provided. A pair of screw protrusions 10 and 11 are screwed into the inner periphery of the spiral tube 13 rotatably fitted to the outer periphery of the tapered tube rear half portion 1a. A dispensing cosmetic container, wherein female thread grooves 14 and 15 are formed. 2. The helical cylinder has a double-threaded groove formed as a relatively shallow thread to form the helical cylinder with a small outer diameter. 2. The dispensing cosmetic container according to claim 1, wherein the diameter of the container is smaller than that of the first half of the tapered cylinder. 3. The vertical grooves 3, 4 and the front screw projections 10, 1.
2. The dispensing cosmetic container according to claim 1, wherein 1 is provided axially symmetrically. 4. The dispensed cosmetic container according to claim 1, wherein the flexibility of the core chuck is mainly carried by the narrow width extending portion 9. 5. The flexibility is such that when the lead chuck is inserted from the rear end of the tapered barrel and assembled, the narrow extension is sufficient to allow one of the threaded protrusions to climb over the closed end. 5. The dispensing cosmetic container according to claim 4, wherein the container is of a degree to bend.